Atlassian Confluence: Format HTML based on version/build number

check-build-number.vm

## Velocity has access to `$generalUtil` in Confluence
## @see: https://developer.atlassian.com/display/CONFDEV/Confluence+Objects+Accessible+From+Velocity
##
## `$generalUtil.getBuildNumber()` returns the build number
## @see: https://developer.atlassian.com/display/CONFDEV/Confluence+Build+Information


## $generalUtil.getBuildNumber() returns a String, so convert to int

#set($confluenceBuildNumber = 0)                                                              
#set($confluenceBuildNumber = $confluenceBuildNumber.parseInt($generalUtil.getBuildNumber())) 

#if ($confluenceBuildNumber >= 4104)
  ## Confluence 5+
  ...
#elseif ($confluenceBuildNumber >= 3047)
  ## Confluence 4.x
  ...
#else
  ## Confluence 3.x and below
  ...
#end